Ilton



(No Model.) J. B. HAMILTON.

REED. No. 312,;15. Patented Feb. 10, 1885.

UNITED STATES PATENT OFFICEO JAMES BAILLIE HAMILTON, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-THIRD TO E. ARCHIBALD RAMSDEN, OF NEV YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 312,115, dated February 10, 1885.

Application filed April 2, 1884. (No model 5 Boston, Massachusetts, have invented certain Improvements in Reeds, of which the following is a specification.

My invention,which is fully described hereinafter, has for its obj ect economy in the manufacture ot' the reeds for musical instruments for which Letters Patent No. 263,899 were granted to me September 5, 1882, and this object I attain in the manner which I will proceed to describe` reference being had to the I5 accompanying drawings, in which- Figure lis a perspective view ot' the tongueplate detached from the frame; Fig. 2, a perspective View of the frame; Fig. 3, a plan view of the tongue-plate and trame connected together, and Fig. 4 an inverted plan view.

In my said patent twotongues riveted to a slotted frame were connected together by a bar between their free ends and the ends which were riveted to the frame for insuring unity of action of the tongues, and hence termed a unison-bar.77 In the present case the two tongues a a form part ot' an elastic plate A, of metal, and partly separated from a central strip, b,also forming part of the plate, by slits x x, which terminate at y, the central strip being longer than the tongues. The

rigid metal frame B has an oblong opening, d. and to the end portion e ot' this traine is riveted the elastic plate A, the central strip, b, being secured to the end portion f ot' the frame, which is preferably grooved to receive a portion of the said central strip. It will be seen that the vibration of the entire elastic plate from the point where itis riveted orotherwise secured to the frame is restricted at one point only-that is, where the slits y y terminate and the tongues merge into the plate-the elastic central strip being' the restricting medium. In other words,this central strip at its junction with the plate forms a connection between the two tongues, and this connectionA is the equivalent ot' the unison-bar described in my aloresaid patent. g

The construction of two or more reedtongues and the unison-bar or equivalent out ot' one piece ofnietal forms the subject ot' a separate application for a patent tiled by me March 25, 1884, Serial No. 125,518, and I therefore do not in this application claim anything therein set forth.

I claim as 1nyinvention The combination ot' the frame B with the elastic plate A, secured near one end to the end portion c ot' the frame B, and having` tongues a a, and a central strip, b,which is secured to the endf of the frame, and is united to the tongues between the outer free ends ot' the latter and the point where the plate is secured to the frame, all substantially as set forth.

In testimony whereof I have signed my naine to this specification inthe presence of two subscribing witnesses.

JAMES BAILLIE HAMILTON.

Vitnesses:

HARRY SMITH, HUBERT HowsoN. 

